Skiving-machine.



No. 823,586. PATENTED JUNElQ, 1906.

` -E. P. DAVENPORT.

SKI'VING MACHINE.

APPLICATION FILED MAYlZ, 1902.

2 SHEETS- SHEET 1.

WAYNE-SEEE- I INVENTUFI.-

PATENTABD JUNE 19, 190s.

2. M H n. E e l v T m N n E m PA .V .w M m M mvAD o.v N-\\\\. VMM 1 man..mm-z www W i ESM Y A F Y E E UNITED STATES PATENTv OFFICE.

EUGENE F. DAVENPORT, OF MELROSE, .MASSACHUSETTS ASSIGNOIR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY. Y y

e sKivlNQ-MAGHINE.

Patented J une 19, 1906.

Application filed le! 12', 1902-. Serial Fo. 106.979.

l To wlL whom, it 11u01/ concern.'

Be it known that I, EUGENE F. DAvEN PORT, a citizen of the UnitedStates, residing -at Melrosein the county of Middlesex and State ofMassachusetts, have invented an Improvement in'Skiving-Machines, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like reference characters on the drawawork-support that as a piece of leather is fed towar the cutter a stripwill be cut from the edge of the leather in such a Way as to leave saidedge skived or beveled.

Manyportions ,of the machine to which the present invention is shown asapplied are substantially the same asv correspondmg parts of the machineshown and described in nited States Letters Patent No. 636,942, grantedto Charles H. Bayley.

A feature of the present invention consists in providing a high-speedWork-feeding mechamsm with means by which the operator is enabled tocontrol the rate of feed, whereby work may be advanced rapidly whendesired, as when portions thereof having regular edges are bemgo eratedupon, and may be advanced more slow y at other times, aswhen irregulared es are beingoperated upon. v

Another eature of the invention consists in la machine rovided with acutter and a work-feeding evice which are actuated normally atredeterinined relativespeeds, said machine aving a connection betweenthe feeding device and its actuatingmechanism i which Will permit themovement of. the feeding device to be retarded' by resistance applied tothe feeding device without changing the speed of the cutter. 'In theembodiment of the invention herein-shown thel operator ma retard therotation of the feeding device by olding back-the work :o1: by a plyinghis finger as a brake to the feeding evice, and thereb va the rate atwhich the work is fed re ative y to the speed of the cutter.

This provision for varying the rate of feed with relation to the speedof the cutter isof particular value in a skiving-machine when o eratingupon soft and spongy stock and w en skiving pieces of stock the edges ofwhich are irregular.

It has been recognized that it is desirable materially to increase thespeed of skivingmachines -While operating upon pieces of work havingregularly-formed edges in order thereby to increase. the ca acity of themachine. It has been found, owever that the speed at which the workcould' be fed in existin machines was in practice limited b the act thatit is necessary in feeding wor having irregular edges for the operatorto mani ulate the Work by turning it from side to sri e to keep theirrelaredge against the edge guide. The spee which it'was practical to givethe machine has therefore been limited and has been dependent upon theskillgwith which the operator was able to manipulate the ieces` of workwhich had irregular edges. ith these facts in mind the present feedin'mechanism, which is adapted to be actuate to feed the Work very`rapidly while operating upon regular edges, has

the Work may be retardedand completely controlled by the operator whilethe machine is operating upon irregular edges or the irre lar portionsof an edge.

been provided with means by Which the feeding of,

n the drawings, Figure 1 is a side eleva- I tion of a complete. machine.Flg. 2 is 'a sectional view'on line :n x'of Fig. 1. Fig. 3 is a planview of a portion of the machine.

. The frame Aof the machine is adapted to rest upon a table or otherbase and is of such shape as to support and ide the movable parts ofthemachine. e driving-shaft 2 may be actuated from any suitable sourceof power and is provided at 3 with a Worm which engages a worm-gear 4 uon a shaft 5. shaft 5 actuates the sha t' 7 through `beveled gears 6 6,and the shaft 7 carries the worksu ort or lower feeding-member 8. A Worm10 on the left-hand portion of the drivingshaft actuates a worm-gear 11,carried by a shaft 12. A feeding-disk 13 is mounted on the lower end ofthe shaft'12 and is adapted to coperate with the work-support 8 to'feedThe v IOC the Work by `engaging thevupper-.surface of.

the Work with its'marginal ace A spiral spring 14'surrounds the shaft 12and bears at against a rotary knife, (indicated at 22.). T

e knife is carried on a shaft 20., mounted in bearings 21, and isadapted lto be driven in any sultableV manner by the driving-sl1aft 2. An edge guide is indicated at 60. 4

The machine as,thus far described is the same as lthat shown-.in thesaid Letters Pat,

ent.

its upper end with a cone comprising a collar a bushing, upon which issecured the tapering section 42, composed of suitable friction material.The cone isv adjustably secured onA the shaft 12 by a clamping-screwl'l.The cone constitutes one member of a fric.-

' ltion-clutch, which clutch is designedtoaf- "in fric'tional contact.

ford between said feeding-disk shaft and the kpositively-driven Wormygear or pinion .11a connection that will ermit the operator .to

retard the` rotation o the feeding-disk'shaft by holding back the workor-byvmeans of 'resistanceapplied to the feeding-fdisk or its shaft inany manner. .The pinion I1 is provided 'With a suitable'socket toreceive fthe cone, and this. inion constitutes the other Amember of thec utch. ,A spring 4 3, bearing at its base-upon'the inion 11andhavingits upper end connecte Ato the shaft 1 2 by the screw 44,serves to hold the clutch members i spring 43 may-be varied' byadjusting the of the shaft 12. j Thisadjustment o t 'sion of the s ring43 controlsthe readiness cone' nearer toor farther from the u with whicht e` clutch will slip.

By means of the connection above described between the feeding-disk andits actuator said feeding-disk is normally driven at the same speed asthe Work-sup ort to feed the Work a ainst the skivinger. The feeding memers may be so connected to the driving-shaftas to rotate at a high speedand feed the Work very rapidl to the knife while operating on strai ht eges.

` the ngerof the operator acedlightly upon The .tension of the e ten-Vit. '.llhisfcapacity ofthe-machine to permit vthe Work tobe manuallyheld back is also of advantage in skiving very thin, soft, or

v spongy leather, as it is necessary to hold such leather :taut andallow it to be fed slower than heavier leather maybe fed. By reason ofthe novel arrangement hereinfdescribed the o erator -may permit the worktobe fed to t e knife only sovfast as the knife canvskive it tothebestadvantage. i v

The operation of the machine is as follows: .The parts `bein adjustedtothe shoWninFig; 1 t emachine is starte bycon- -necting -thevdriving-shaft to the source of oWer. The 'workman resents a pieceofeather' which is to be s ived with its edge 'against 'the vusual edgeguide.. The 'rotary v v work-support and the feedin `disk grasp Athe Thefeeding-disk shaft 12 is provided near.

leather and rapidly feed it a ong against .the

osition p skiving-knife, vwhich trims it in such a way as to form abeveled ed e' thereon. In skivingA a straji4 htj or luniform y-'curvededge very litvtle gui ance of the Work bythe workman is necessary, .andthe feeding-mechanism may therefore be allowed to-advance the work at .v

full .speed When 'an irregular jedge 1s reached however, theworkman mustturnthe work'fr'om side to side, as .is Wellunderstood, in order to keepthe' irregular ed e against the edge' guide. done, the Work must be'ffedmore slowly. The described connection 'between the feeding-disk .and itsactuator enables the Workman to hold the Workfback, and thus retard therotation of the`feedi1f1g-disk,l or he may retard the disk'by placin hisfinger lightly on, it. I The Work is thus awn into the niachine moreslowly, allowingtheworkman .time and opportunity to manipulate it ytocause'it tobe presented properly to the skivingknife. It 1s to beunderstood that While vthe Workman-retards. the 'feedin -diskv thepinion .11 continues tobe rotate ,driving-shaft at. auniforms eed, andthe To enable this to e' socket turns with relation to t e cone ofthe'jfle'cingedisk shaft or more rapidly'thansaid s a t. ',aconstant pullonthe work,` which, aids the `Workman in guiding. the Workv and willcause it to befed forward again atno'rmal speed as soon as the workmanceases lto hold 1t back rotation of the not intended to limit"the'inyention, however,

to the embodiment thereof herein shown, since This causesthe'feedingdisk to exert,

rzo

it'may be embodied in other forms without de-` 4parting fromthe stpiritof the invention.. ItI

1s also not intende to limitthe novel feeding mechanism tou se indriving-.machined as' it is obvious that'` it might begnsed in machinesin'w'hich'the Work-'isvfeddtdany sortof a ,de-

vice for operating upon it insteadof toa skivin -cutter. i I

at I claim as my invention, however,

and desire to secure b Letters Patent, is'- l. -In a machine o the classdescribed, a device for operating upon the work, in combinationwith'rindependent mechanism for feeding the work lto said operatingdevice, said Work-feeding mechanism comprising a feeding-disk, means toactuate said disk, and' a connection between said actuating means andsaid disk arranged to permit the movement of' the feeding-disk to beretarded by resistance lapplied to said disk and to allow the vactuatingmechanism to move independently of said disk. v

2. In a skiving-machine, the combination,

Awith devices for operating on the work, of

feeding mechanism, comprising a Work-support, a feeding-disk, and meansfor rotatin the work-support and feeding-disk, sai means including apositively-actuated member and a connectlon between the feedingdisk andsaid (positively-actuated member, constructed an arranged to permit theoperator to retard the rotation of the feeding-T disk b l holding backthe work.v

v 'with a cutter, of mechanism independent of ingfed.

lthe cutter for feeding the' work, said feeding mechanism comprising a:work-support and a feeding-disk adapted to coperate to feed the work, adriving-shaft to. actuate said feedin members, and connecting meansbetween sai driving-shaft and one of said feeding members, arranged toermit` relative movement of said arts and) the ceding member by holding,back the work.

4. In a skiving-machine, the combination with a cutter, feeding memberscoperating to advance the stock to the cutter, and positively-drivenmechanism for a ctuating one of v said feeding members, of mechanism foractuating the otherfeedingmember constructed and arranged to permit themovement of ceding member to be retarded by' transmitted through thework besaid other resistance 5. In a skivin -machine, the combination,With a cutter, o mechanism independent' of they cutter for feeding thework, said feeding mechanism comprislng a Work-support, a feeding-disk,a driving-shaf, and operative connections between said driving-shaft andthe feeding-disk, said connections including a cone-clutch, the membersof which are held yieldingly in engagement and are arfranged to moverelatively to'permit the rotation of the feeding-disk to be manuallyretarded for varying the rate at lwhich the workisfed.

-6. In a skiving-machine, the combination' a work-Support; driving-y n aski'vmg-machlne, the combination" allow the operator to retard' shaft, afeeding-disk shaftV and connected with Said driving-shaft and carrying afeeding-disk, said feeding-disk shaft comprising two sections provided,res ectively, with the members of a cone-clutc ielding means for holdingsaid clutch members in engagement, and means for adjusting the force ofsuch holding means.

'7. In aAskiving-machine, the combination with a skiving-knifer of afeeding mechanism comprising a driving-shaft, a work-support, a positiveconnection. between said Worksupport and the driving-shaft to actuatethe wor -supporg a feeding-disk also actuated from sa1 operate with thework-support to feed the Work at a normal speed, and a connectionbetween said disk and the driving-shaft arranged to permit thel WorkVbeing fed to be `manually retarded and fed at less than nore lmal s eed.

8, n a skiving-machine, a driving-shaft, a

Work-support, a feeding-disk, a shaft on which said feedin -disk ismounted, a pinion on said disk-sha 'in operative 1connection withv saiddriving-shaft, a socket formed in said pinion, a cone-clutch-memberadjustably mounted on said disk-shaft and adapted to actuate thedisk-shaft from-the drivingshaf1 ;,`.and yielding means for' holdingsaid con'eL in its socket whereby the feeding-disk may be. retarded bythe operator to control the feeding of the work.

9. In a skiving-machine, the combination with a cutter, a work-feedingroll arranged to ,support the Work and to advance it to the cutter, acooperating work-feedin disk arranged to engage byits mar 'nal Iace uponthe upper surface of the wor a shaft upon which the disk is mounted, anda drivingshaft, of a connection'hetween the drivingrotation of thefeeding-disk may be retarded erator While gui ng the Work.

' 10. In a machine of the class described, the

the work, of a work-feeding mechanism comprising a'feeding member,actuating means therefor, and a frictional connection beme'ans arrangedto allow the movement of the .feeding member to be retarded by unusualresistance while the actuating means continues'its normalmovement. l

11. In askiving-machine; the combination with a cutter, a work-feedingdevice, and ac`` tuat' mechanism connected with the cut- A`ter anthefeeding device to drive said devices normally at ,predeterminedrelative evice and said actuating mechanism arpbrmt themovement: of thefeedto coperate with said socket in the pinionV shaft and thefeeding-disk shaft whereby thev by resistance applied to the work by theopdriving-shaft and, adapted to co-.

Ilo

combination with a device for operating upon utween the feeding memberand the actuating v peels, of-Ta .connection between the feedingv ingdevice .to be retarded by resistance a and arranged-to allow theoperator to retard plied to said device without changing t e themovement ofthe feeding device by holdspeed ofthe cutter. -in back theWork.

12.'In a skiving-machinehthe combination n testimony whereof I havesigned my 5 with a cutter, a work-feedin device, and ac. name tothe-specification in the presence of 15 tuating means connected wit thecutter and two subscrbin witnesses.

the feeding device to: drive said devices nor- E GENE F. DAVENPORT.mally at predetermined relative speeds, of a Witnessesz frictionalconnection located between the v NELSON W. HOWARD,

1o feeding device and said actuating mechanism ARTHURl L.v RUSSELL.

It ig hereby certified than 'in Letters-Patent No. s23,'5s6,gi-and June19, 1996', upon the :applicationl of Eugene FffDavenport, 'lof Melrose,'Massachusetts, `for amv improvementin "Skiving-Malchines, an errorappears in the printed specification requiring correction, as follows :yIn line 65, page 3, the word and should be stricken out and 'insertedbeforethe clause a feeding-disk shaft insal'ne'line;A and that theLetters Patent should be read with this correction therein that the samemay conform to the record of the case in the Patent Oc'e.

Signed and sealed this 28th day of August, A. D., 1906.

[Smeg A v E.. B. Moomi,

Acting Commissioner of Patents.

Correction in Letters Patent' No. 823.15864.

ing device .to be retarded by resistance a and arranged-to allow theoperator to retard plied to said device without changing t e themovement ofthe feeding device by holdspeed ofthe cutter. -in back theWork.

12.'In a skiving-machinehthe combination n testimony whereof I havesigned my 5 with a cutter, a work-feedin device, and ac. name tothe-specification in the presence of 15 tuating means connected wit thecutter and two subscrbin witnesses.

the feeding device to: drive said devices nor- E GENE F. DAVENPORT.mally at predetermined relative speeds, of a Witnessesz frictionalconnection located between the v NELSON W. HOWARD,

1o feeding device and said actuating mechanism ARTHURl L.v RUSSELL.

It ig hereby certified than 'in Letters-Patent No. s23,'5s6,gi-and June19, 1996', upon the :applicationl of Eugene FffDavenport, 'lof Melrose,'Massachusetts, `for amv improvementin "Skiving-Malchines, an errorappears in the printed specification requiring correction, as follows :yIn line 65, page 3, the word and should be stricken out and 'insertedbeforethe clause a feeding-disk shaft insal'ne'line;A and that theLetters Patent should be read with this correction therein that the samemay conform to the record of the case in the Patent Oc'e.

Signed and sealed this 28th day of August, A. D., 1906.

[Smeg A v E.. B. Moomi,

Acting Commissioner of Patents.

Correction in Letters Patent' No. 823.15864.

i r i i i i i i i It is hereby certied that in Letters Patent No.823,586, granted June 19, 1906,

upon the application of Eugene F.l Davenport, of Melrose, Massachusetts,for an improvement in Skiving-Machinee, an 'error appears in the printedspecification requiring correction, as follotvs: In line 65, page 3, theword and out and inserted before the clause ta feeding-disk shaft insame line; and that the Letters Patentshould be read with thiscorrection therein that the same may conform to the record of the casein the Patent Oiiee.

Signed aud sealed this 28th day of August, A. D.. 19H6.

[SEAL] E. B. MOORE,

Acting Commissioner of Patente.

should be stricken

